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If | vec a|=2,| vec b|=5a n d vec adot v...

If `| vec a|=2,| vec b|=5a n d vec adot vec b=0,` then ` vec a x ( vec ax( vec ax( vec ax( vec a x( vec ax vec b)))))` is equal to `64 vec a` (b) `64 vec b` (c) `-64 vec b` (d) `-64 vec a`

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RESONANCE DPP ENGLISH-JEE MAINS-All Questions
  1. At the point P(a,a^(n)) on the graph of y=x^(n),(n in N), in the first...

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  2. Let N=(4^5+4^5+4^5+4^5)/(3^5+3^5+3^5)dot(6^5+6^5+6^5+6^5+6^5+6^5)/(2^5...

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  3. If | vec a|=2,| vec b|=5a n d vec adot vec b=0, then vec a x ( vec ax...

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  4. If x=(log)k b=(log)b c=1/2(log)c d , then (log)k d is equal to 6x (b)...

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  5. If f(x) =x^(3)+bx^(2)+cx+d and 0lt b^(2)ltc then in (-oo,oo)

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  6. The number of solution of the equation log(-2x)= 2 log(x+1) are

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  7. Let vec a=2 hati+hat j+ hat k , vec b=hat i+2hat j- hatk and a unit v...

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  8. If (log)3x=a and (log)7x=b , then which of the following is equal to (...

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  9. Vector vec a in the plane of vec b=2 hat i+ hat ja n d vec c= hat i-...

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  10. Draw the graph of y=||x|^(2)-2|x|-3|, if y=x^(2)-2x-3

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  11. The solution set of the inequality max {1-x^2,|x-1|}<1 is (-oo,0)uu(1,...

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  12. Number of solution satisfying, sqrt(5-(log)2x)=3-(log)2x are: (a)1 (b...

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  13. If product of the roots of the equation 3x^2-4x+(loga^2-log(-a)+3)=0 i...

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  14. Number of solutions of the equation sin(1/3cos^(-1)x)=1 are only one ...

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  15. If alpha,beta,gamma,delta are the smallest positive angles in ascendin...

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  16. Area of the triangle formed by the line x+y=3 and the angle bisectors ...

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  17. Solve the equation: (4sqrt(cos x/2)-5-(sqrt(2))/2)^2+ sqrt(2)(4sqrt(c...

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  18. Which of the following is greatest? tan1 (b) tan4 (c) tan7 (d) tan1...

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  19. The image of the pair of lines represented by a x^2+2h x y+b y^2=0 by ...

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  20. Find the equations of bi sectors of the angle between the lines 4x + 3...

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